>> yeah, shannon, reaction here in washington. so far very far reaching shock and grief new push for gun control as you can imagine and ideas for dealing with mass violence in this country. everyone seems to agree it's a difficult challenge with no eyesy solutions. >> we have to come a knowledge there is no simple solution. yes there needs to be a conversation about gun control but also about the way we treat mental illness, also about the culture of violence in this country which may have contributed to the way in which this very disturbed young man thought of course a hot topic on the sunday talk shows. joe lieberman of connecticut and congressman jason chaffets of utah both suggesting the mats media including violent negative video games negatively influence impressionable young men. dick durbin and lieberman suggesting a national commission on mass violence to find ways of preventing future tragedies like this. and some are pointing to a better mental health and better mental health screening as part of the answer. >> i think